How Much Does a 4 Stall Restroom Trailer Cost?
A restroom trailer this size runs on daily, weekend or weekly pricing depending on the job. Daily rentals for restroom trailer rental fall between $175 and $2,500 depending on trailer class, and a 4 stall unit sits in the middle of that band, not at the entry end reserved for basic units. Weekend bookings, common for weddings and reunions, run $900 to $3,000. If you're comparing options, our restroom trailer rental cost page breaks down what drives the difference between a 2 stall and a 4 stall.
| duration | low | typical | high |
|---|---|---|---|
| day | 175 | 800 | 2500 |
| week | 150 | 1397 | 1650 |
| weekend | 900 | 2000 | 3000 |
| event | 2499 | 3500 | 3899 |
Multi-day construction jobs in Waterloo often land in the week column, while a Saturday wedding books the weekend rate. Ask about delivery separately: the delivery fee is quoted apart from trailer rental and depends on distance and site access.
Where Can a 4 Stall Trailer Be Placed on My Site?
Placement comes down to clearance and a level pad. The trailer needs firm, stable ground, consistent with ADA Standards section 302.1 for surfaces, and a level spot keeps the internal plumbing draining correctly. If you're staging a delivery alongside a roll-off dumpster rental or a storage container rental, plan for a straight approach; a roll-off delivery alone needs about 60 feet of clearance behind the truck, and a trailer needs similar room to back in and level.
For events in downtown Waterloo or job sites near Cedar Falls, 6.7 miles west, or Evansdale, 6.4 miles southeast, our crew scouts the pad before the trailer ever leaves the yard. If you're not sure your lot has the room, our porta potty placement guide covers the same clearance logic that applies to trailers. Right-of-way placement in Waterloo needs confirming with the city; we do not guess at that answer, and neither should you.
Is a 4 Stall Restroom Trailer ADA Accessible?
Not automatically. Most 4 stall units include three standard stalls and one accessible stall, but confirm this when you book. ADA Standards section 213.2 requires that where single-user units are clustered, at least 5 percent, and never fewer than one, be accessible, and that logic carries over to trailer stalls at a public event. An accessible stall needs a 32 inch clear door opening under ADA Standards section 404.2.3 and room for a 60 inch turning circle under section 304.3.1. If your event needs a unit built specifically to that standard, look at our ADA accessible porta potty page or ask us to confirm the accessible stall on your 4 stall trailer meets those dimensions before delivery day.
For construction crews, OSHA 1926.51(c) sets toilet counts by headcount rather than by trailer type, so a 4 stall trailer can satisfy that requirement for a mid-size crew without adding standalone units. Pair it with a handwashing station rental if 29 CFR 1910.141(d)(2) applies to your site, since that standard requires soap and towels or a hand dryer, not just sanitizer.
How many people can a 4 stall trailer handle in a day?
Four stalls comfortably serve 75 to 150 guests across a single event day, more for a wedding with a tight schedule, fewer for an all-day festival with steady traffic. For larger counts, compare against the 8 stall restroom trailer or ask us to run the numbers using our how many porta potties do I need guide.
Does the trailer need a power hookup?
Most 4 stall trailers run interior lighting and pumps off a standard outlet or generator; confirm your power source when booking. If your site also needs lighting after dark, pair the trailer with a light tower rental or a temporary power pole for the same event.
Can I rent a 4 stall trailer for a construction site instead of an event?
Yes. Crews on multi-week jobs often choose the week rate over renting standard units separately. Check our construction site services page or the construction dumpster rental page if you're bundling trailer, dumpster and fencing on one job site.
What's the difference between a 4 stall and a 2 stall trailer?
Stall count and footprint. A 2 stall restroom trailer suits smaller gatherings under 75 guests, while the 4 stall handles mid-size crowds without the cost of an 8 stall unit built for 150 plus.
Do I need a permit to place a trailer in Waterloo?
Placement on private property generally doesn't require one, but anything touching a public street or right-of-way needs confirming with the city. See our porta potty permit requirements page for the questions to ask before delivery.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.